Whats The Best Way To Make A Fence Royal Icing,gumpaste?help

I have to make a nightmare before christmas grooms cake...and it has a fence on the top of it...it actually looks like toothpicks...but i wanted to do something edible....whats the best thing to use? i'm not new to this i've been decorating for 12 years..but not out of my home...I don't know all the new techniques...thanks for your help..